Combine two VarOpt sketches

Combines two varopt() sketches into a new varopt_sketch result, without mutating either input. a and b must hold the same item type (a mismatch raises datasketches_incompatible_sketch). The result is sized for the larger of a and b's configured k.

Usage

varopt_union(a, b)

Arguments

a, b

varopt_sketch objects holding the same item type.

Value

A varopt_sketch object.

Examples

a <- varopt(1:1000, runif(1000), k = 50)
b <- varopt(501:1500, runif(1000), k = 50)
u <- varopt_union(a, b)
u$k()
#> [1] 50
u$n()
#> [1] 2000